10. Plan your weekend social activities mid-week

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Regardless of whatever proactive habits you have, meeting people requires you to get out into the world once in a while. When you do, It's better to be out with friends than out by yourself. That said, it sometimes takes real effort to get a routine-bound group of friends to do anything different or to get a lazy group of friends to do anything at all. Get people involved early in the week instead of waiting until the last minute.